🔴 Helius Medical Technologies is trading 7.54% down in after-hours trading — no clear catalyst identified

Helius Medical Technologies is trading 7.54% down in after-hours trading at $2.55, and the reason remains unclear.

• It closed September 18, 2026 at $2.76 after a 20.52% regular-session gain; searches found no clear company-specific announcement dated September 18.
• The company’s investor-relations site shows its latest identifiable update dated August 21.
• The decline appears isolated: major U.S. indexes finished higher, including the Nasdaq Composite at 0.41%; no confirmed earnings release or late-breaking catalyst was identified.